Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Albrecht Kober, Walter Burda, Gerhard Reum, Frank RothefiledCriticalAlbrecht Kober
Priority to DD19271676ApriorityCriticalpatent/DD125175B1/xx
Publication of DD125175A1publicationCriticalpatent/DD125175A1/xx
Publication of DD125175B1publicationCriticalpatent/DD125175B1/xx